if everything is determined only by distance like airplanes then we can easily plot many TTs and trains.
CBE PGT elephant corridar restrictions. KYJ ERN SRR speed restrictions actually prevent Kerala to get premium train services like Tejas. Because of these restrictions only we unale to see premium trains in potential success routes like CAN TVC VB, MAQ CBE VB, MAQ ERS VB, ERS MDU VB etc.